apiVersion: extensions/v1beta1
kind: NetworkPolicy
metadata:
  annotations:
    annotationsKey: annotationsValue
  creationTimestamp: "2008-01-01T01:01:01Z"
  deletionGracePeriodSeconds: 10
  deletionTimestamp: "2009-01-01T01:01:01Z"
  finalizers:
  - finalizersValue
  generateName: generateNameValue
  generation: 7
  labels:
    labelsKey: labelsValue
  managedFields:
  - apiVersion: apiVersionValue
    fieldsType: fieldsTypeValue

apiVersion: extensions/v1beta1
kind: NetworkPolicy
metadata:
  annotations:
    annotationsKey: annotationsValue
  creationTimestamp: "2008-01-01T01:01:01Z"
  deletionGracePeriodSeconds: 10
  deletionTimestamp: "2009-01-01T01:01:01Z"
  finalizers:
  - finalizersValue
  generateName: generateNameValue
  generation: 7
  labels:
    labelsKey: labelsValue
  managedFields:
  - apiVersion: apiVersionValue
    fieldsType: fieldsTypeValue

{
  "kind": "NetworkPolicy",
  "apiVersion": "extensions/v1beta1",
  "metadata": {
    "name": "nameValue",
    "generateName": "generateNameValue",
    "namespace": "namespaceValue",
    "selfLink": "selfLinkValue",
    "uid": "uidValue",
    "resourceVersion": "resourceVersionValue",
    "generation": 7,
    "creationTimestamp": "2008-01-01T01:01:01Z",
    "deletionTimestamp": "2009-01-01T01:01:01Z",
    "deletionGracePeriodSeconds": 10,

    }

    @Test
    fun `can get generic extension by type`() {

        val extensionAware = mock<ExtensionAware>()
        val extensions = mock<ExtensionContainer>()
        val extension = mock<NamedDomainObjectContainer<List<String>>>()
        val extensionType = typeOf<NamedDomainObjectContainer<List<String>>>()

        whenever(extensionAware.extensions)
            .thenReturn(extensions)

    private final Map<String, ExtensionHolder<?>> extensions = new LinkedHashMap<>();

    public <T> void add(TypeOf<T> publicType, String name, T extension) {
        if (hasExtension(name)) {
            throw new IllegalArgumentException(
                format("Cannot add extension with name '%s', as there is an extension already registered with that name.", name));
        }

            }

            def noDisplayName = extensions.create("no-name", NoDisplayName)
            def displayName = extensions.create("name", DisplayName)

            println("no display name = \${noDisplayName}")
            println("display name = \${displayName}")
        """

        expect:
        succeeds()
        outputContains("no display name = extension 'no-name'")

    }

    def "can create ExtensionAware extensions"() {
        given:
        container.add("foo", Parent)
        def extension = container.getByName("foo")

        expect:
        extension instanceof ExtensionAware

        when:
        extension.extensions.create("thing", Thing, "bar")

        then:
        extension.thing.name == "bar"
    }

		}
		return
	}
	for i, s := range b.extensions {
		if s[0] == e[0] {
			if e[0] == 'u' {
				b.extensions[i] += e[1:]
			}
			return
		}
	}
	b.extensions = append(b.extensions, e)
}

// SetExt sets the extension e to the tag. e must be a valid extension as
// returned by Tag.Extension. If the extension already exists, it will be
// overwritten, except for a -u extension, where the individual key-type pairs

	mimeTypesLower sync.Map // map[string]string; ".z" => "application/x-compress"

	// extensions maps from MIME type to list of lowercase file
	// extensions: "image/jpeg" => [".jpg", ".jpeg"]
	extensionsMu sync.Mutex // Guards stores (but not loads) on extensions.
	extensions   sync.Map   // map[string][]string; slice values are append-only.
)

// tag::convention[]
// tag::create-extension[]
// tag::extension[]
// Create extension object
interface GreetingPluginExtension {
    Property<String> getMessage()
}
// end::extension[]

// Add the 'greeting' extension object to project
def extension = project.extensions.create("greeting", GreetingPluginExtension)
// end::create-extension[]

// Set a default value for 'message'
extension.message.convention("Hello from Gradle")